如何将变量合并到数组中，同时保留变量名称作为键

How to merge variables into an array while retaining the variable name as key

本文关键字：变量名保留变量合并数组 | 更新日期: 2023-09-27

$countries = array( 
 "af" => "Afghanistan",
 "ax" => "Åland Islands",
 "al" => "Albania",
 "dz" => "Algeria"
);

$as = "American Samoa";
$ad = "Andorra";

如何将变量组合到数组中，同时将变量名称保留为数组中的键？

compact从变量中创建一个数组，然后简单地将两个数组相加：

$countries += compact('as', 'ad');

看到它的实际效果。

foreach(array('as','ad') as $name){
  $countries[$name] = $$name;
}